Congrats on the egg.
Always cool to get that first one ever.
@1chickendog142 potatoes are fine raw as long as not green. In fact they're a good liver support, very healthy for them. Can be too hard for some chooks to peck, though others will eat raw carrots and potatoes just fine.
As for avocadoes, like mangoes and some other foods including grapes, the 'toxic' aspect is not proven to apply across the board. I'm as yet unaware of any studies proving they're lethal, I suspect perhaps they've got this reputation wrongly, i.e. someone accused them for causing a death they could not pinpoint the cause of, or perhaps someone had severely deficient hens which then had access only to green mangoes, or unripe avocadoes, or the leaves of either tree, any of which if eaten in excess could be fatal. Another theory is that someone had recently sprayed with pesticides and someone let their chooks eat the fruits or leaves, which could easily be fatal.
When it comes to appleseeds, the toxicity potential is over-hyped as well. 'Only 7 seeds can kill someone' they say, yet when you're drinking whole apple juice, you're consuming often far more than that per two liters. Often we consume much more in apple pie and other sources too, cooked or raw.
I get boxes of apples and smash them on the ground for the chooks to have free choice, and one of the first things they go for are the seeds and I've never had a death or illness due to it.
Lettuce also contains arsenic, many things do, yet nobody's careful about feeding large amounts of that due to the arsenic content.
Better safe than sorry of course, but many of us find out sooner or later that we're being overcautious in some area. Then again some of us get away with seriously dangerous things for a long time that others do not find themselves so lucky with; just recently I saw a woman recommend giving chickens polystyrene foam to eat to distract them from feather picking. She thought it was fine, never had a death due to it, and the breeder she got her chooks off did the same thing and recommended it to her in the first place, also no deaths. Yet every year many animals die from consuming polystyrene foam.
Eating feathers generally means they need more protein, feathers are another dangerous thing which can block them up and kill them.
As always, some individuals are far more sensitive than others and a very hungry animal restricted to only one or two feed items is always at risk and it almost doesn't matter what you're feeding. Seasonal variations are behind many deaths, even normally safe foods can be unsafe at certain times, and there's a heck of a lot of other factors to consider as well.
Taking it slowly and carefully with introducing new foods or even allowing them access to non feed items they've never seen before is always a good idea.
Best wishes.
